JPH0625496B2 - Latching device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latching device, and more particularly to a lever-type latching device for opening and closing and latching a pivotally supported door or the like.

[Conventional technology]

2. Description of the Related Art Lever-type locking devices for opening and closing and locking a pivoted door or the like have been conventionally known. In a recently proposed latching device, an arm is pivotally attached to a housing and biased by a spring, and the housing is inserted into an opening formed in a panel of a hinged door. In such a device, the arm is held in a closed position by a closure and the latch is attached to the housing and engages a fastener integral with one end of the arm. When the latches and fasteners are in the disengaged state, the arms are pivotable to the open position in response to spring bias and serve as handles for use in opening and closing the door. In such a device, since the latch is rotatably held in the housing and does not form a part of the handle, the latch does not move to the open position or the closed position together with the door. . When the arm is returned to the fully closed position, the catch at one end of the arm reengages the catch.

[Problems to be solved by the invention]

In the above-described conventional hooking device, inadvertent hooking release due to impact force occurs, undesired reengagement of the hooking tool and the fastener, and when the arm is opened, the arm is not operated by the operator. There is a drawback that the hand may be hit or accidentally opened by inadvertent contact with the protrusion of the latch. Furthermore,
There is a drawback in that the length of the arm is limited because the arm and the hook are separated from each other as soon as the hook is separated from the hook at one end of the arm.

[Means for solving problems]

The latching device according to the present invention comprises a housing, a handle pivotally mounted on the housing, a latching device pivotally mounted on the handle to form an extension thereof, and a handle when the handle is moved to its closed position. A fastener on the housing configured to receive a latch and a mounting bracket that engages the housing. According to the present invention, in such a hooking device, the housing is provided with a biasing means formed so as to contact the hooking tool and restrain the hooking tool at the hooking position. A stop device further includes a first additional attachment for biasing the handle and the fastener to a closed position when the housing is engaged with the handle to disengage the latch from the fastener. A biasing means and a second additional means for engaging the handle and the latch to urge the latch to a position where the outer surface of the latch is substantially flush with the outer surface of the handle. And a biasing means.

〔Example〕

The preferred embodiment of the present invention is illustrated in the drawings, including FIGS. FIG. 1 shows a lever type latching device of the present invention provided in an opening 15A formed in a door 12, and FIG. 1 shows a state in which the door 12 is closed to cover the opening 11 in the cabinet 10. Shows. As shown in FIG. 1, the outer surfaces of the handle 24 and the latch button 34 are adjacent to each other and are flush with the flange 42 of the housing 15 when the door 12 is closed and latched. Door 12
Has a hinge 13. The door 12 swings in the opening / closing direction about a rotation axis corresponding to the axis of the hinge 13.

A housing assembly 14 is shown in FIG. 2 of the drawings and is formed to fit within an opening 15A formed in a door 12 of the housing assembly. Although cabinet 10 is not shown in FIG. 2 for clarity, the relationship of cabinet 10 to door 12 is shown in FIGS. 4 and 6.

The housing 15 includes a flange 42 that engages the outer surface of the door 12 when the housing 15 is fully inserted into the opening 15A. The housing 15 is held in place by the mounting bracket 16 and its flange portion 20, which engages the rear surface of the door 12 when the bracket 16 is mounted, as shown in FIG. Bracket 16 is a lock washer 18
It is held in place by a mounting bolt 17 having. The bolt 17 has an opening 19 formed in the bracket 16 as shown in FIGS. 3, 4, 6, and 7.
And is screwed into the screw hole 22 of the boss portion 21 of the hanging frame. The web 21A of the latch frame is the first arm 3 of the spring 30.
Acts as a stopper for 2. The second arm 31 of the spring 30 contacts the inner surface of the handle 24, which causes the handle 24 to be spring biased toward the open position, as shown in FIG. The handle 24 is pivotally supported on the housing 15 by a pin 29.

The handle 24 has a handle adjusting bracket 25, and the handle adjusting bracket 25 has a screw hole 2 at one end thereof.
Have 7. The adjusting bolt 26 is mounted in the screw hole 27 and is fixed at a predetermined position by the tightening action of the fixing nut 28. The head 26A of the adjusting bolt 26 is arranged so that the handle 24 comes into contact with the back surface of the cabinet 10 when the handle 24 is moved to the closed and locked position as shown in FIG. Flange 42 engages the outer surface of door 12 and is held in place by mounting bracket 16 to secure housing 15 to door 12.

The leaf spring 23 is a component of the preferred embodiment of the present invention, and the leaf spring 23 is U-shaped at one end and has a groove 24A.
This groove 24A fits snugly on the edge of the web 21A, as shown in FIGS. 4 and 6. Leaf spring 23
Has an extension 23A at the other end, and this extension 23A
Is positioned within the movement path of the claw portion 40 of the hook 33 when the handle 24 moves to the closed position, as shown in FIG. The spring 23 can be easily removed from the web 21A and omitted. Although the spring 23 is sufficient for the construction of the present invention, the spring 23 is a component of the preferred embodiment because it provides satisfactory performance over a wide range of uses.

The hook 33 is pivotally attached to a hook pin 35 provided in a downward extension of the handle 24. The latch pin 35 is provided with an engaging groove 38, and the groove 38 allows the handle 24 to move to the fourth position.
As shown, it fits on the end of the fastener 39 when moved to the closed and latched position.

The latch spring 36 is mounted in a spring seat 37 which is a fixed extension of the handle 24. When the latch button 34 is pressed against the force of the spring 36, the latch 33 rotates to the open position, as shown in FIG. When the latch 33 is opened,
The handle 24 is moved to the open position shown in FIG. 6 by the spring force of the torsion spring 30. The bracket 25 engages the edge of the web 21A when the handle 24 is in the open position. Therefore, the handle 24 stops by abutting the web 21A at one end of its movement path, that is, in a completely open position, and the end of the bolt 26 at the other end of the movement path, ie, in a completely closed position, of the cabinet 10. It stops by contacting the inner surface. When the handle 24 is fully closed, the action of the ends of the bolts 26 on the wall of the cabinet 10, the door 12 and the flange 42 keeps the door 12 solidly held in the closed position, with the latch 33 in the first position. It is moved to the position shown in FIG. 5 and is maintained until the handle 24 and its extension 33 are used to open the door 12. As shown in FIGS. 4, 5, and 6, the latch housing 41 is used to receive the latch 33 and form the fastener 39 on the upper end thereof.

As shown in FIG. 4, the door 12 is completely closed and the handle 24 and its extension portion (hooking member) 33 are closed, and the flange 4 is closed.
The latch 33 is engaged with the fastener 39 when it is flush with the outer surface of 2. Therefore, the adjustment bolt 2
Door 1 by the force that 6 gives to the inner surface of cabinet 10.
2 is held securely in the closed position. In the preferred embodiment, the closed state of the door 12 is more positively maintained by the action of the leaf spring 23 on the pawl 40 which holds the catch 33 against the catch 39. This holding action is assisted by the force of the spring 36 acting on the back surface of the latch button 34.

To open the door 12 in the closed and locked position,
First, it is necessary to remove the latch 33 from the fastener 39. This operation is achieved by pushing the latch button 34 in the direction of the arrow in FIG. 5 against the force of the spring 36. By this operation, the latch 33 rotates counterclockwise around the latch pin 35 provided at the end of the handle 24. By the rotation of the hook 33, the claw 40 of the hook 33 is moved against the holding force of the leaf spring 23, and the engagement between the groove 38 and the fastener 39 is released. The handle 24, the latch button 34, and the latch 33 are moved to the open position shown in FIG. 6 by the force of the spring 30.
In this open position, the handle 24 and its extension (hooking device) 33 can be used as a handle for opening the door 12 which is swingable around the hinge 13. At this time, the end of the adjusting bolt 26 is lowered to the position shown in FIG. 6 by the clockwise rotation of the handle 24 and its extension bracket 25, and the opening 11 of the cabinet 10 can be seen when the door 12 is opened. . The maximum effect of the present invention is obtained by the leaf spring 23 attached to the edge of the web 21A.

To close and lock the door 12, the door 12 is moved inward by the handle 24 and its extension (hatch) 33 until the end of the bolt 26 passes through the opening 11. Thereafter, the handle 24 and its extension (locking button) 34 are rotated counterclockwise together until they are flush with the outer surface of the flange 42. By the pressing action on the handle 24, as shown in FIG. 4, the fastener 39 is engaged with the groove 38 of the latch 33, and the claw portion 40 of the latch 33 is tightly engaged with the leaf spring 23. . In this state, the hook 33
Is securely held in engagement with the fastener 39,
The latch 33 can be removed from the fastener 39 only when the latch button 34 is pushed inward against the spring force of the latch spring 36 and the spring force of the leaf spring 23. When the latch button 34 is pressed, the latch 33 is moved to the detached position shown in FIG. The spring force of the spring 30 acting on the handle 24 causes the handle 24 and its extension (locking button) 34 to rotate clockwise as shown in FIG. 6 to open and close the door 12. A handle is provided.

〔The invention's effect〕

As is clear from the above description, according to the present invention, the following advantages can be obtained.

(1) Even when the cabinet or the handle is subjected to some external impact, the latch 33 can be restrained in the latch position without being disengaged from the fastener 39 due to the biasing force of the leaf spring 23.

(2) When the latch 33 is locked to the fastener 39, a click sound is emitted from the leaf spring 23, and the click sound provides a feeling of moderation that the locking is reliably performed.

(3) In order to remove the latch 33 from the fastener 39, it is necessary to push the latch button 34 against the spring force of the latch spring 36. At this time, the latch button 34 cannot be pushed. If sufficient, the latch 33 may be re-engaged with the fastener 39, but the biasing means 23 may prevent such re-engagement.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a door and a cabinet including a handle, a latch and a housing showing an embodiment of the present invention, and FIG. 2 is a door shown in FIG. 1 and an opening portion of the door and a housing. And an exploded perspective view of the mounting bracket, FIG. 3 is a perspective view of the door, the housing and the mounting bracket shown in FIG. 1 as seen from the inside of the door, and FIG. 4 is a state in which the door is closed and hooked. Figure 4
-4 is a cross-sectional view taken along line -4, Fig. 5 is a partial cross-sectional view when the locking mechanism shown in Fig. 4 is in the non-locking position and the door is in the closed position, and Fig. 6 is in the open position when raised. FIG. 7 is a sectional view similar to FIG. 4 of the latching handle and the latching device attached thereto and the door, and FIG. 7 is a sectional view taken along line 7-7 of FIG. 10 ... Cabinet, 11 ... Opening, 12 ... Door, 13 ... Hinge, 15 ... Housing, 16 ... Mounting bracket, 21A ... Web, 23 ... Leaf spring, 24 ... Handle, 26 ... Adjustment bolt, 30 ... Spring, 33 ... Latch, 34 ... Latch button, 39 ... Fastener.

Claims (11)

[Claims] 1. A housing, a handle pivotally mounted to the housing, a latch pivotally mounted to the handle to form an extension thereof, and the latch when the handle is moved to its closed position. A locking device comprising a fastener on the housing configured to receive a tool and a mounting bracket engaging the housing, wherein the housing abuts the locking tool. Urging means is provided to constrain the tool in its latching position, the latching device further engaging the housing and the handle, the latching tool being the fastener. First additional biasing means for biasing the handle and the fastener to the open position when disengaged from the handle, and the outer surface of the latch engaging the handle and the fastener. Almost the same as the outer surface of the handle Latching device, characterized in that a second additional biasing means for biasing the locking member to a position where the flat state. 2. An apparatus according to claim 1, wherein the biasing means comprises a leaf spring. 3. The urging means comprises a leaf spring, and the leaf spring has a pair of spaced portions that are substantially parallel to each other and an inclined portion that connects the pair of spaced portions. The device according to claim 1. 4. The biasing means imparts a relatively high resistance force to an initial pivotal movement when the hooking tool separates from the hooking position, and when the hooking tool separates from the hooking position. Further increasing resistance to the subsequent pivoting of the
An apparatus according to claim 1 including means for providing a relatively low resistance to pivoting when the latch is in the unlatched state. 5. The hook according to claim 1, further comprising a button portion and a claw portion engageable with the fastener, the button portion forming an extension of the handle. The device according to paragraph. 6. The apparatus according to claim 1, wherein said biasing means makes separable contact with said latch. 7. A method according to claim 1, wherein the biasing means comprises a leaf spring, the first additional biasing means comprises a linear spring, and the second additional biasing means comprises a coil spring. The apparatus according to item 1. 8. The handle is provided with an arm extending from the handle, and the arm is provided with a stopper formed to engage with an inner surface of the cap when the handle is moved to a closed position. The apparatus of claim 1, wherein the housing is provided with a flange that engages an outer surface of the door when the housing is fully inserted into the door opening. 9. The hooking member has a flat outer surface, the handle has a flat outer surface, and the hooking member and the handle are in a closed position. The outer surface of the latch and the outer surface of the housing sometimes become substantially flush with each other.
The device according to paragraph. 10. The device according to claim 9, wherein the flat outer surface of the latch forms a latch button for moving the latch in a detaching direction from the fastener. . 11. The housing according to claim 9, wherein the housing is provided with a boss portion having a screw hole, and the boss portion is formed with a cross-shaped web forming a part of the housing. Equipment.